Bottom connection hydraulic setting tool



' April 25, 1939. R. N. BEAN ET AL 2,155,381.

BOTTOM CONNECTION HYDRAULIC SETTING TOOL Filed Sept. 25, 1957ZSheets-Shet 1 2| I P59 v 2% 4fl l8 4/ y A A "51 40/ 42. 4 as g\ 2RNBEAN, H.C.Bl .ocK a: L.A.LAYNE INVENTORS ATTORNEY5 Patented Apr-'25,1939 UNITED. STATES PATENT OFFICE nor'rom CONNECTION 'mmnaumc SETTING'roor.

Buric N. Bean, Harold C..Block, and Leslie A. Layne, Houston, Tex; saidBean and said Block assignors to said Layne j Application September25,1937, Serial Names 9 Claims.

The invention relates to a combination well bottom assembly and settingstring and setting tool therefor wherein the setting tool will bereleased by the application of hydraulic pressure Another object oi theinvention is to provide a combination setting tool and wash valve whichcan be released and the wash valve closedby bydraulic pressure.

Another object of the invention isto provide a setting tool connectionat the lower end of the well bottom which may be, released by theapplication of hydraulic pressure.

Still another object is to provide a combination release plug forsetting tools and a wash valve which can be moved to close the bottom ofthe well and to be latched in such closed position.

Other and further objects of the invention will be readily apparent whenthe following descrip tion is considered in connection with the.accompanying drawings, wherein:

Fig. 1 is aside elevation of the upper end of the well bottom assemblyshowing certain of the parts in section and arranged as they are whenthe assembly is lowered into the well bore.

Fig. 2 is a side elevation showing a continuation of Fig. 1 toillustrate certain of the parts in section at the bottom of the assemblyand showin the parts in position to receivethe hydraulic pressure forreleasing the tool and closing the wash valve.

Figs. 3 and 4 are side elevations of the upper and lower portions of theassembly respectively, but showing the parts alter the setting has beenaccomplished andthe packer collapsed.

The present invention relates to the general assembly shown in theco-pending application for patent oi! Leslie A. Layne, Harold'C. Blockand Albert L. Roco, Serial No. 122,948, filed January 29, 1937, and alsoto the general construction of a Setting tool such as shown in PatentNo.

at 2 and terminates in the-lower end '8 below 55 which the well bottomassembly 4 is arranged to project; This assembly includes the set shoe 9which carries a back pressure valve 1 of the downwardly opening typewhich fits against a ring I mounted in the set shoe. This ring hasan'inner cylindrical face 9 which serves as a seat for the wash valveIII which is slidably mounted inside of the nipple II which is connectedto the set shoe and projects upwardly therefrom. A piece of blank pipeil may be connected to the well bottom above the set shoe by means of acoupling i or the strainer pipe It may be connected directly to the wellbottom. e strainer It may be of any desired length and has the blankliner ll comfected thereabove. The upper end of the liner ll is providedwith a stop or shoulder It which forms part of the packer l9. Inside ofthe well bottom assembly [is the tubing or. setting string which may bea pipe of any desired diameter which carries ag setting tool 2| andextends downwardly inside of the well bottom to 1 pander block and washvalve I0 is positioned in side 01' the fingers, the cylindrical surface22 thereof having been moved inside or the ends of the spring fingers tohold them in expanded position. This wash valve has an upstanding skirt30 thereon which fits closely-about the lower end l of this sleeve 22 soas to form a seal therewith.

In order that this wash valve will be held in position to maintain thefingers expanded, one or more lacking pins 38 may be passed through thenipple l i and into the wash valve as seen in Fig. 2. 40 These lockingpins will be inserted after the parts are assembled. The wash valve hasa cylindrical passage 34 therein which leads to the discharge ports 35so that washing liquid may be pumped downwardly through the settingstring or wash pipe 26 and discharged through the shoe 5 when H thepressure thereof is suiliclent to open the back pressure valve 1.

It seems obvious that the weight of the well bottom-assembly will becarried by the threaded 5 connectionZS-fl so that the entire weight ofthe assembly will be supported by the wash pipe'or setting string 29.There will not be any load on the strainer 88, however, because thisconnection with the assembly is at the base thereof.

with the parts in the positions shown in Figs. 1 and 2 the entireapparatus will be lowered into the well bore until the set shoe rests onthe bottom of the well.

The assembly can then be raised slightly and the washing operationcarried on until the returns have cleared up to show that a majority ofthe drilling mud has been removed from the so that hydraulic pressureapplied through the setting string 21 will be available .to shear thepin or pins 33 and cause the combination wash valve and e p nder blockto move downwardly to the position shown in l ig. 4.

This downward movement accomplishes two functions. namely, it closes thewash valve by moving the skirt I thereoi' into the cylindricalfacesoitheringisosstoiormaseal-and positively close the lower end or thewell'bott'om.

' The outer surface ll of this skirt may be slightlytaperedsothataiitwillbeprovidedat this point to'assistinholdingthewashvalvein closed position and assist in stopping the valve.Thesharpcorneroithlsskirtllasitmovesinto=thecylindflcaliacelwillservetoshearofiany obstruction that may havebeen deposited on the seatringl-insomeinstancessmallsticksor' twigs.gravel or nails may fiow downwardly with the wash water and be depositedat this location due to the p esence or the back pressure valve I.

This shearing action will tend to remove such obstructions and insurea'sfeal. I! desired a plurality of slip Jaws ll. may be carried in theperiphery of the wash valve and any upward movement or the wash valveafter it is once set will be prohibited by the wedging action oi theseslips as seen in Fig. 2.

The other runction oi the movement of this combination expander blockand wash valve is to alsobeseeninl'ig.4becausetheblock:has moveddownwardly from its position within the lower end oi the fingers II anddue to the resilient nature of these fingers they will spring inwardlyto release their threaded connection with the well bottom assembly, andthey will assume the position shown in Fig.1 as abutting against thesleeve 22.

The skirt II during this action moves downwardly a shortdistance alongthe sleeve 22 but not a'suiiicient distance to move away from thesleeve. It the operator now desires to find out whether his setting'toolhas released itis only necessary for him to raise the setting string 20a short distance so that the lower end of the sleeve 22 moves out of theskirt II. The operator can observe hispressure gauge at this timeandbyraisingthesettingstringslightlythereshouldbeadropinpressure-becausethepressure has been built up when theplug ll. closed ed the ports 36 and when the sleeve 22 moves out or theskirt ll thewashins liquid inside or the setting string will be releasedinto the annular space 5| inside oi thestrainer. This si naladvisestheoperatorthathistoolhasbeenreleased. On the other hand it nosuch signal is observed when he raises the wash pipe he is assured thatthe wash valve has not moved downwardly a sumcient amount to cause therelease aromas:

and he may then increase his pump pressure until he does obtain arelease.

If. the operator wishes to be doubly sure that his wash valve iscompletely closed he may now lower the setting string until the lowerends of the fingers 25 abut against the upper end of the skirt and inthis manner he may tamp the wash valve to be sure that it is in itslowermost position.

Another manner of releasing the tool would be to raise the entireassembly a very short distance from the well bottom at the time the plugis inserted. Thus when the pins 33 shear and the wash valve movesdownwardly the setting tool connection would be released and the wellbottom assembly 4 would drop a short distance onto the bottom of thewell bore and this downward movement would carry the skirt as to a pointbelow the end of the sleeve 22.

A circulation of liquid may now be had to wash the inside oi' the screenand then the setting string 20 may be raised a sufilcient amount tobring the setting tool 2i adjacent the elevation. of the upperend of thepacker so that it will engage the shoulder 54. The weight of the settingstring may then be utilized to collapse the packer by moving the settingtool barrel 56 downwardly over the ratchet teeth 51 so that the uppershoulder 58 on the packer barrel is moved toward the stop or support itso that the packing material I! will be expanded as seen in Fig. 3.

This particular'type oi packer is known as an upside down packer becausethe lower support It remains stationary while the packer barrel 58 whichcarries the packing 58 moves downwardly. Such a packer is of advantagebecause the expansion of the packing begins at the base and progressesupwardly. Such an arrangement permits the setting of the packer with asetting string of much lesser weight than other types of packers.

I! desired a concrete shield 60 may be carried by the upper end of thepackerto cling about the' setting string 20 and prevent the entrance ofsand or sediment into the well bottom assembly.

The set shoe 6 of course has the usual opening 62 therein but inaddition may have the laterally and upwardly inclined ports 63. Theseports are provided to allow discharge of the wash liquid in a directionso that the bottom of the well bore will not be washed away. It has beenfound that in some instances the wash water discharging from the opening62 would wash out a considerable hole so that when the washing operationwas completed and the well bottom set the whole assembly would move downto rest on the bottom' and the result would be the setting of thestrainer at an elevation considerably below its calculated position. Thelateral discharge. of the wash water has therefore been provided.

Broadly, the invention contemplates acombination wash valve and settingtool expander which may be raised to close the well bottom, release thesetting tool, and signal the operator that such release has beeneiiected.

What is claimed is:

l. The combination of a well bottom assembly and asetting string andsetting tool therefor comprising a plurality of spring fingers on saidstring, a wash valve and expander block beneath said fingers, a setshoe, shear means'hoiding said valve in place so that said fingers areconnected to said set shoe, hydraulically operable means to shear saidmeans and move said valve to release said connection and to' move saidvalve to closed position.

.2. A well bottom assembly, an hydraulic re-' lease setting toolconnected thereto, a wash valve to hold said tool connected, andhydraulically operable means to move said valve to closed positioniandto release said connection.

3. A well bottom assembly, a setting tool connected' thereto, a washvalve to hold said tool connected, hydraulically operable means to movesaid valve to release said tool, and means to latch said wash valve inclosed position.

4. A combination expander block and wash valve for well bottomassemblies and setting tools therefor comprising a body, portstherethrough,

and means to engage the setting tool to hold said tool connected to thewell bottom.

5. A wash valve 101' well bottoms including a tapered skirt, dischargeports through said valve,-

and an hydraulic setting tool including a wash I valve, hydraulic meansto move said valve to closed position and to release said tool, andmeans 1 on said tool to set the packer of said well bottom assembly.

7. In combination a well bottom, a waslastring, and a cementitious capcarried by said string to deflect settlings from said well bottom.

8. A wash pipe and wash valve, aplug to be pumped through said pipe tosaid valve, ports in said valve to be closed by said plug, and inter!engaging parts on said valve and pipe which are releasable to relievethe pressure in said pipe as an indication the pipe is released.

9. A set shoe for well bottoms comprising a body, a back pressure valvetherein, a discharge opening in the base of said body, and laterally andupwardly inclined ports in said body below said. valve.

RURIC N. BEAN.

HAROLD C..BLOCK. LESLIE A. LAYNE.

